Tubing for boring.



E. FRANK-IGNOUL.

TUBING FOR BORNG.

APPLICATION FILED APR.25.1911.

Patented Dec. 24, 1912.

without Casing m piiiing.

EDGARD RANXGNOUL. OF LIEGE. llfJLG-IUM.

'.LU'BING FOR BORING.

1,048,304., Specification ofifftlxers Patent. jlulqmicd lkw; ,234, Hlllfj.

iimml View slimvixigg imo 'mm (if mi' immili" limi.

My sysl'i'n iiizila im" iff suils when: il is hcfikwau'j.' iii puiwsiii from 'falling into lh@ lullig, "fflwixihv i5 usgil in my syslfom, il, ililm` systems in the 'i'ulhwfliig g. lt forms no 1mm' L. l causo one @211mm (Lliix'if emily of the i'liivi pli if plug;

force is itimismittd li'miigii 9. The leading stein l0 is similar to that shown in the lirst i'orin. The oxpansible Washer portion l5 may be formed of leather, Wood, lead, die., and Will expand laterally under the blows and contact with the inner Wall of the ,leading pipe section to keep out water or earthy material. The feature ot' tht` coinpressi'ble packing in this figure is not claimed herein, as l have tiled ay divisional application thereon, No. 636,502, tiling` date July lst, 1911.

ln Fig. 3 l show a i'orni similar to that of Fig. l, except that a Special annular space 17 is provided in the length of the plug to form a cavity for the reception of earthy inatteriwhich may pass upiinside of the shearing` portion G and the .lower portion i" of the plug. ln this case the saine leading' stem is shown as in the previous cases. This cavity portion, o course, is provided between the plugand the inner Wall of the leading, pipe section, and preferably betvveen it and the shearing head of this Wall.

My' system may be used with or Without surmunding,` tubing, although l prefer to use it With such tubing.

Many changes may be niade in theorrn and arrangement of the plug, the leading ,stein,&o., Without departing from nay 1nvention.

l claim: l

l. A boring apparatus, comprising a. driving` tapered plug having a. longitudinal hole, a leading stein extending slidably through said hole, and ay ramnier arranged to surround the stein and act upon the plug; substantially described.

2. A boring apparatus, comprising` a plug' having a` longitudinal hole, a leading stein extending loosely through'the hole and having an enlarged point, and a rannner having a. hole to receive the leading stem and movable thereover; substantially as described.

reisen@ il. tubular boring apparatus, comprising a casing having a lower inner shoulder, a tapered plug having` an enlarged portion engaging the said shoulder, the plug havingr longitudinal hole, a leading stein extend ing through the hole, and a rainnier-arranged to surround the leading stem; substantially as described.

4. A tubular boring apparatus, comprising a casing7 section having` a lower inner shoulder, and a plug having' an upper portion arranged to engage said shoulder, the casing` and plug` having an intermediate cavity between them to receive any mattei' WorkingV up between the plug and the lower end portion of. the using; substantially as described.

5. In tubular boring apparatus, a tubular shearing,r member, a plug arranged 4to inove 'Within the saine, the plug and shearing member having,` an annular cavity between them, and a leading stern extending through the plug; substlnitially as described.

-i tubular boringgl apparatus comprisingin combination, a tube adapted to be sunk Ainto the earth and provided with a lower shearingV edge, and an internal shoulder arranged above said edge, a tapering plug havingn portion closely hitting said tube adjacent the shearing edge thereoil, a. portion. for engaging said` internal shoulder, and a reduced portion projecting,` upwardly toward .aid shoulder, a` rain for striking Said ineinber lo sink the apparatus, and a guide rod extending through said plug' 'member and rain and having a pointed portion adapted to be disposed in alliance, of said. plug; substantially as described,

ln testimony whereof l alllx rny signature in presence or' two witnesses.

v EDG-ARD 'FRANKGNOUL. lf'llitnesses GEORGES VANDER Hariri-inn, LEONARD l'ivA. 

